"The greatness of a nation and its moral progress can be judged by the way its animals are treated." -- Mahatma Gandhi
"The animals of the world exist for their own reasons. They were not made for humans any more than black people were made for white, or women created for men." -- Alice Walker
"A man can live and be healthy without killing animals for food; therefore, if he eats meat, he participates in taking animal life merely for the sake of his appetite. And to act so is immoral." -- Leo Tolstoy
-- A.A. Milne,
People you didn't know were vegetarians: Steve Jobs, Einstein, Cesar Chavez, Brian Greene, Kafka, Leonardo da Vinci, Rosa Parks, Tolstoy, Dennis Kucinich, GB Shaw, Fred Rogers, Ellen de Generis, Gandhi, George Harrison, Paul McCartney, J.B.S. Haldane, Norbert Wiener, Jon Stewart (source)